linux-kernel - PI mutex support on ARM

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Date:	Sun, 8 Jul 2007 10:24:56 +0200
From:	"Remy Bohmer" <l.pinguin@...il.com>
To:	"Thomas Gleixner" <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org, "Ingo Molnar" <mingo@...e.hu>,
	linux-rt-users@...r.kernel.org
Subject: PI mutex support on ARM

Hello Thomas,

I have build an implementation for the routine
futex_atomic_cmpxchg_inatomic() to make PTHREAD_PRIO_INHERIT mutex
work on ARM.
Compared to other architectures where CPU specific assembler is used,
it is probably not the most optimal implementation possible, but I
tested it successfully on a Atmel AT91RM9200 core, and it could work
on other (UP) architectures as well.

What do you think of it?
Or do you know a better solution?

Kind Regards,

Remy

View attachment "fix-userspace-prio-inherit.patch" of type "text/x-patch" (2039 bytes)